@article{10_4153_CJM_2016_052_8,
     author = {Bijakowski, Stephane},
     title = {Partial {Hasse} {Invariants,} {Partial} {Degrees,} and the {Canonical} {Subgroup}},
     journal = {Canadian journal of mathematics},
     pages = {742--772},
     year = {2018},
     volume = {70},
     number = {4},
     doi = {10.4153/CJM-2016-052-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2016-052-8/}
}